Title :
Analysis of MIMO capacity in waveguide environments using practical antenna structures for selective mode excitation
Author :
Poitau, G. ; Kouki, A.
Author_Institution :
LACIME-Ecole de Technologie Superieure, Montreal, Que., Canada
Abstract :
Different realistic antenna configurations are studied and their impact on MIMO capacity is investigated in waveguide-like environments, such as hallways, tunnels or streets. Simulations are conducted for a 2×2 MIMO system using the the finite element method, which is particularly well suited for this kind of problem. First, each antenna is optimized independently from the other by optimizing its shape and location in a manner that insures optimal input impedance and excitation of a single mode. Subsequently, the two antennas are placed together and a final optimization is carried out to reduce their mutual coupling and improve the impedance matching. The results obtained for a 2×2 MIMO system clearly show the significance of practical antenna considerations on MIMO capacity in a waveguide environment.
Keywords :
MIMO systems; antenna theory; channel capacity; finite element analysis; optimisation; radio links; receiving antennas; transmitting antennas; waveguide theory; waveguides; MIMO capacity; antenna optimization; antenna structures; channel capacity; finite element method; guided wave theory; impedance matching; input impedance; mutual coupling; receivers; selective mode excitation; single mode excitation; transmitters; waveguide environments; Antennas and propagation; Electromagnetic waveguides; Finite element methods; MIMO; Propagation losses; Receiving antennas; Transmission line matrix methods; Transmitters; Transmitting antennas; Waveguide theory;
Conference_Titel :
Electrical and Computer Engineering, 2004. Canadian Conference on
Print_ISBN :
0-7803-8253-6
DOI :
10.1109/CCECE.2004.1345027
